Ink made by Sumiya. Product Name: Kurosuke Safe for mounting! Easy to write, and highly popular with elementary, junior high, high school students, and adults. New and unused. #Ink #Shodo (Calligraphy) #NewYearCalligraphy #ShodoClass #Shuji (Calligraphy) #InkLiquid #Kurosuke #Shoyu (Calligraphy Supplies Store)